Annual Activity Report 2025

SITUATION AND ACTIVITIES OF THE COMPANY AND ITS SUBSIDIARIES DURING THE PAST FINANCIAL YEAR

The group’s businesses

MINERAL RESOURCES IN THE GROUND – IN METRIC TONS OF URANIUM (TU) (ESTIMATES AT THE END OF 2025)

Total measured and indicated resources

Measured resources

Indicated resources

Orano’s share (tU)

Ore (kt)

Grade (%)

Metal (tU)

Ore (kt) 154 184

Grade (%)

Metal (tU)

Metal (tU)

Holding (%)

Deposit

Cigar Lake Dawn Lake Kiggavik McArthur McClean Midwest Read Lake Shea Creek

82

4.24 3,490

4.30 6,614 10,104 40.45% 4,087 3.75 6,886 6,886 42.53% 2,929 0.47 48,953 48,953 66.19% 32,401

0 0

0 0

0

2

0 10,418

72

1.94 1,394

63

1.88 1,177 2,572 30.20%

776

0 0 0 0

0 0 0 0

0

203

1.35 2,749 2,749 77.50% 2,130 1.71 19,059 19,059 74.83% 14,262

0 1,118

0 0

0

0

0

0 21.76%

0

526

2.67 14,014 14,014 50.90% 7,133

TOTAL CANADA

154.1

3.17 4,884 12,665

0.79 99,453 104,337

-

63,720

Bagombe

0 0

0 0

0 0

0 0

0 0

0 0

0 68.42%

0 0

TOTAL GABON

0

-

Katco

274.6 274.6

0.06 171.35 4,246 0.06 171.35 4,246

0.09 3,924 4,095 51.00% 2,089

TOTAL KAZAKHSTAN

0.09 3,924 4,095

-

2,089

Dulaan Uul

0 0 0 0 0 0 0 0 0

0 0 0 0 0 0 0 0 0

0 2,567 0 16,695 0 19,262 0 60,100 0 60,100

0.03

631

631 90.00%

568

Zuuvch Ovoo

0.02 3,215 3,215 90.00% 2,894

TOTAL MONGOLIA

0.02 3,846 3,846

-

3,461

Trekkopje

0.01 7,320 7,320 100.00% 7,320

TOTAL NAMIBIA

0.01 7,320 7,320

-

7,320

Bakouma

0 0

0 0

0 0

0 0

0 100.00%

0 0

TOTAL CAR

0

-

Nurlikum

0 25,546 0.025 6,382 6,382 45.00% 2,872

TOTAL UZBEKISTAN

0 25,546

0.02 6,382 6,382

-

2,872

TOTAL (EXCLUDING NIGER)

429 1.18 5,055 121,819 0.10 120,925 125,980

-

79,462

Imouraren (1)

- - -

- - -

- - -

- - -

- - -

- - -

- - -

63.50%

- - -

- -

Somaïr (2)

TOTAL NIGER

TOTAL 79,462 (1) The State of Niger withdrew the operating permit held by Imouraren SA on June 19, 2024. On December 19, 2024, Orano Mining initiated arbitration proceedings against the State of Niger in order to assert its rights and seek remedy for all of its losses resulting from the withdrawal of the operating permit. Given the withdrawal of the operating permit held by Imouraren SA on June 19, 2024, the resources and reserves of the Imouraren deposit are no longer included in Orano’s resources and reserves since December 31, 2024. As a reminder, proven reserves stood at 34,494 metric tons of uranium and the probable reserves stood at 136,932 metric tons of uranium, i.e. a total of 171,426 metric tons of uranium reserves at December 31, 2023 (95,527 metric tons of uranium - Orano share). The volume of indicated resources amounted to 22,368 metric tons of uranium at December 31, 2023 (14,204 metric tons of uranium - Orano share) and the volume of inferred resources amounted to 6,475 metric tons of uranium at December 31, 2023 (4,112 metric tons of uranium - Orano share). (2) Under the guise of nationalizing Somaïr, the State of Niger expropriated Orano on June 19, 2025 outside of any legal proceedings and without any compensation. Orano Mining has initiated two arbitration proceedings to assert its rights, in particular over the inventory corresponding to Somaïr’s production, as well as compensation for its losses resulting from unlawful acts committed by the State of Niger. 429 1.18 5,055 121,819 0.10 120,925 125,980 -

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Orano - Annual Activity Report 2025